Fuse-cartridge.



J. W. STEELMAN.

FUSE CARTRIDGE.

APILIUATION FILED my 16,1913

Patented 00's. 20, 1914 7 l 1.7, l. J

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UNITED STATES PATENT OFFICE.

FUSE-GARTRID GE.

Specification of Letters Patent.

Application filed May 16, 1913.

Patented Get. 28 191 i. Serial No. 768,100.

To all whom it may concern:

Be it known that I, Josnrn 'W. STEEL- )IAN, a citizen of the UnitedStates, residing at Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented new and useful Improvements inFuse-Cartridges, of which the following is a specification.

This invention relates to improvements in fuse cartridges and hasparticular applica tion to a cartridge wherein the fusible element maybe renewed whenever the same has become burned out or otherwisemutilated.

ln carrying out the present invention, it is my purpose to provide afuse cartridge which will embody among other features a tubular bodypreferably composed of insulated material and having the inner surfacesat the opposite ends thereof flared outwardly. and a pair of wedgeshapedblocks disposed within each end thereof and having the confronting facesthereof designed to grip the respective end of the fusible clcmcnt orstrip, the ends of the tubular body being closed by means of caps whichlatter act upon the wedge-shaped blocks to force the same inwardly ofthe tube and so produce a clamping action upon the fusible element orstrip.

It is also in purpose to pr wide a device of the class (escribed whichwill embrace the desired features of simplicity, efliciency anddurability coupled with cbeapness of cost in manufacture and marketingand which may be readily assembled and dissembled so as to facilitaterefilling of the cartridge.

\Viththe above and otherobjects in view, the invention consists in theconstruction, combination and arrangement of parts hereinafter set forthin and falling within the scope of the claim.

in the accompanying drawing; Figure 1 is a longitudinal sectional viewthrough a fuse cartridge constructed in accordance with the presentinvention. the fusible strip being shown in edge elevation. Fig. 2 is asimilar view taken at right angles to Fig. 1 showing the fusible stripand certain of the wedge blocks in plan. Fig. 3 is a perspective view ofone of the caps, and Fig. 4 is a. similar view of a pair of cooperatingwedge blocks.

Referr ng now to the accompanying drawing in detail. the numeral 1designates awtubular body composed of insulatin mawedge blocks 4, theconfronting faces of the blocks of each pair being: fiat as at 5 and aredesigned to receive the respective ends of a fusible strip 6 disposedlongitudinally and centrally of the body 1. Threadedly engagmg each endof the body 1 is a cup-shaped cap 7 having the side wall thereofthreadedinteriorly to engage the exterior threads in the respective endof the body, and the end wall thereof formed. with an aperture 8 coaxialwith thetubulai; body 1 to receive the free end of the fusible strip 6beyond the wedge blocks, the wall of such opening 8 being beveled orflared outwardly as at 9 so as to afford convenient opening for thelingers when the caps have been loosened and it is desired to refillthe, cartridge. as when the fusible element has burnt out; 7

From the foregoing description takenih connection with the accompanying,drawing. the ccnstruction. mode of operation and mann r of employing myinvention will lt e readily apparent.

It will be seen tha-t if have provided a fuse cartridge wherein the ifusible strip may be readily replaced and wherein the component partsmay be readily disassembled when it is desired to clean or repair thecartridge, while when replacing a mutilated fusible strip, it is onlynecessa-l'y to loosen the caps at the ends of the tubular body so thatthe wedge blocks will readily receive the strip, the caps beingsubsequently tightened up so as to produce a clamping action between theconfronting surfaces of the wedge blocks and the respective eud'of thefusible strip.

I claim:

A fuse cartridge comprising a tubular body of insulating" materialhaving the inner surfaces of theends thereof flare-d utwardly and theexterior surfaces 'sc-rew tbreadctb'a pair of wedgeshaped bloclnsmounted Within each end of said body and having fiat confronting faces,a fusible strip disposed lengitudinally of said body and having theopposite ends thereof ar ranged between he confronting faces of saidhleeks, and cup-shaped caps having the side Walls thereof threadedlyengaging the ends of said body and the end Walls thereof anertured toreceive the free ends of said strip beyond said blocks, the apertures inn said caps having beveled Walls substantially as, and for the purpose,described.

In testimony whereof I aflix my signature in presence of two witnesses.

JOSEPH W. STEEL: KAN. Witnesses FRANK W. W ILIJAMS, GEORGE V. SCOTT.

